Thirsty moviegoers leaving the Lake Theatre after a late show got a new option on Tuesday in Oak Park. Lake Street Kitchen + Bar has opened at 1101 Lake St., taking the place of Cosi, which closed in March. Rachel Dennis, a longtime Oak Parker and former Bar Louie exec, plans to serve up a seasonally based food menu, accompanied by a choice of 30 wines or 12 microbrews they have on tap.